784
FNCA52 TJSJ 260844
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
444 AM AST FRI DEC 26 2025
DISCUSSION
FIRE DANGER RISKS ARE NOT EXPECTED TODAY.
PRZ014-270845-
SOUTHEAST COASTAL PLAINS-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 10
TEMP (24H TREND) 86 (+2) 65 (-3) 86
RH % (24H TREND) 46 (-5) 87 (0) 46
WIND 20FT/EARLY(MPH) NE 11 NE 10 SE 11
WIND 20FT/LATE(MPH) NE 11 NE 10 SE 11
MIXING HGT(FT-AGL/MSL)5360 4670
TRANSPORT WND (MPH) NE 8 E 7
VENT RATE (KT-FT) 37520 28020
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-270845-
SOUTHERN HILLS-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 0 30
TEMP (24H TREND) 81 (+3) 62 (-3) 82
RH % (24H TREND) 56 (-10) 94 (+4) 56
WIND 20FT/EARLY(MPH) NE 9 NE 9 E 8
WIND 20FT/LATE(MPH) NE 9 NE 9 E 8
MIXING HGT(FT-AGL/MSL)5330 5160
TRANSPORT WND (MPH) NE 8 E 6
VENT RATE (KT-FT) 37310 25800
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-270845-
NORTH COASTAL PLAINS-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 40
TEMP (24H TREND) 83 (+1) 66 (-4) 84
RH % (24H TREND) 58 (-6) 95 (+8) 58
WIND 20FT/EARLY(MPH) NE 11 E 11 NE 11
WIND 20FT/LATE(MPH) NE 11 E 11 NE 11
MIXING HGT(FT-AGL/MSL)4860 4350
TRANSPORT WND (MPH) NE 9 E 9
VENT RATE (KT-FT) 38880 34800
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-270845-
NORTHERN HILLS-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30
TEMP (24H TREND) 82 (+3) 64 (-3) 82
RH % (24H TREND) 59 (-7) 96 (+3) 58
WIND 20FT/EARLY(MPH) NE 11 E 10 NE 10
WIND 20FT/LATE(MPH) NE 11 E 10 NE 10
MIXING HGT(FT-AGL/MSL)5220 5440
TRANSPORT WND (MPH) NE 9 E 7
VENT RATE (KT-FT) 41760 32640
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-270845-
WEST COAST-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 0 30
TEMP (24H TREND) 85 (+1) 64 (-3) 85
RH % (24H TREND) 56 (-4) 93 (+2) 56
WIND 20FT/EARLY(MPH) NE 13 E 13 E 9
WIND 20FT/LATE(MPH) NE 13 E 13 E 9
MIXING HGT(FT-AGL/MSL)5170 4490
TRANSPORT WND (MPH) NE 8 SE 3
VENT RATE (KT-FT) 36190 13470
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-270845-
EASTERN INTERIOR-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 30
TEMP (24H TREND) 82 (+3) 64 (-3) 82
RH % (24H TREND) 59 (-9) 95 (+2) 59
WIND 20FT/EARLY(MPH) NE 9 NE 9 E 8
WIND 20FT/LATE(MPH) NE 9 NE 9 E 8
MIXING HGT(FT-AGL/MSL)4320 4830
TRANSPORT WND (MPH) NE 9 E 7
VENT RATE (KT-FT) 34560 28980
DISPERSION 5 5
DSI 5 1 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-270845-
LUQUILLO MOUNTAIN RANGE-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 40
TEMP (24H TREND) 78 (+4) 62 (-3) 78
RH % (24H TREND) 64 (-8) 98 (+1) 64
WIND 20FT/EARLY(MPH) NE 8 NE 5 E 6
WIND 20FT/LATE(MPH) NE 8 NE 5 E 6
MIXING HGT(FT-AGL/MSL)4230 4440
TRANSPORT WND (MPH) NE 9 E 7
VENT RATE (KT-FT) 33840 26640
DISPERSION 5 5
DSI 5 1 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-270845-
CENTRAL MOUNTAIN RANGE-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 40
TEMP (24H TREND) 80 (+5) 60 (-4) 81
RH % (24H TREND) 60 (-10) 97 (+1) 57
WIND 20FT/EARLY(MPH) NE 12 NE 10 NE 6
WIND 20FT/LATE(MPH) NE 12 NE 10 NE 6
MIXING HGT(FT-AGL/MSL)5460 6140
TRANSPORT WND (MPH) NE 8 NE 3
VENT RATE (KT-FT) 38220 18420
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-270845-
CAYEY MOUNTAIN RANGE-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 78 (+3) 62 (-2) 78
RH % (24H TREND) 63 (-8) 97 (0) 62
WIND 20FT/EARLY(MPH) NE 8 NE 6 E 6
WIND 20FT/LATE(MPH) NE 8 NE 6 E 6
MIXING HGT(FT-AGL/MSL)4330 4620
TRANSPORT WND (MPH) NE 8 E 7
VENT RATE (KT-FT) 30310 27720
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-270845-
VIEQUES-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER PCLDY CLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 84 (+1) 70 (+1) 83
RH % (24H TREND) 54 (-7) 86 (-4) 54
WIND 20FT/EARLY(MPH) NE 11 NE 11 E 8
WIND 20FT/LATE(MPH) NE 11 NE 11 E 8
MIXING HGT(FT-AGL/MSL)4000 4140
TRANSPORT WND (MPH) NE 9 E 9
VENT RATE (KT-FT) 32000 33120
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-270845-
CULEBRA-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 30
TEMP (24H TREND) 84 (+1) 71 (0) 83
RH % (24H TREND) 54 (-7) 84 (-4) 55
WIND 20FT/EARLY(MPH) NE 10 NE 10 E 8
WIND 20FT/LATE(MPH) NE 10 NE 10 E 8
MIXING HGT(FT-AGL/MSL)3990 4100
TRANSPORT WND (MPH) NE 9 E 9
VENT RATE (KT-FT) 31920 32800
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-270845-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 20 20
TEMP (24H TREND) 85 (0) 65 (-3) 85
RH % (24H TREND) 46 (-1) 85 (-2) 44
WIND 20FT/EARLY(MPH) SE 13 NE 16 G18 SE 10
WIND 20FT/LATE(MPH) SE 13 NE 16 G18 SE 10
MIXING HGT(FT-AGL/MSL)5280 4890
TRANSPORT WND (MPH) NE 5 SE 6
VENT RATE (KT-FT) 21120 24450
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-270845-
SAINT THOMAS AND SAINT JOHN-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 20
TEMP (24H TREND) 82 (0) 70 (-3) 82
RH % (24H TREND) 58 (-6) 85 (-1) 58
WIND 20FT/EARLY(MPH) NE 10 NE 10 E 8
WIND 20FT/LATE(MPH) NE 10 NE 10 E 8
MIXING HGT(FT-AGL/MSL)4040 4100
TRANSPORT WND (MPH) NE 9 E 8
VENT RATE (KT-FT) 32320 28700
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-270845-
ST CROIX-
444 AM AST FRI DEC 26 2025
TODAY TONIGHT SAT
CLOUD COVER PCLDY CLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 10
TEMP (24H TREND) 83 (+1) 71 (-1) 83
RH % (24H TREND) 58 (-8) 82 (-5) 58
WIND 20FT/EARLY(MPH) NE 10 NE 10 E 9
WIND 20FT/LATE(MPH) NE 10 NE 10 E 9
MIXING HGT(FT-AGL/MSL)4910 4910
TRANSPORT WND (MPH) NE 9 E 10
VENT RATE (KT-FT) 39280 44190
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page